How to change the UADP NetworkMessage type in ExtendedFlags2 of UADP NetworkMessage

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Charanraj O

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Feb 1, 2025, 9:02:02 AM2/1/25

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Hi team,

Problem statement: In open62541 SDK do we have a support to change the UADP NetworkMessage type in ExtendedFlags2 of UADP NetworkMessage? If it is supported how can we do it?

I am working on PubSub configuration for PubSub-publisher implementation in open62541 SDK where I am trying enable/disable the UADP NetworkMessage flags specifically the UADPVersion, UADPFlags, ExtendedFlags1 and ExtendedFlags2 flags.

I am able to enable the UADPFlags Bit 4-7 (Bit 4: PublisherId, Bit 5: GroupHeader, Bit 6: PayloadHeader and Bit 7: ExtendedFlags1 enable flags) using WriterGroup configuration API as shown in below code (image)

Similarly I wanted to change the “UADP NetworkMessage type” in the ExtendedFlags2, but I am not able to find where can I change it. I wanted to enable the NetworkMessage type to ‘NetworkMessage with discovery announcement payload’(010) but I am able to change it. I can see by default in wireshark the NetworkMessage type shows either NetworkMessage with DataSetMessage(000 ) or NetworkMessage with discovery probe(001).

In open62541 SDK do we have a support to change the UADP NetworkMessage type in UADP NetworkMessage ExtendedFlags2? If it is supported how can we do it?

Thanks and regards,

Charanraj O

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